UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                 SCHEDULE 13D

                      The Securities Exchange Act of 1934
                              (Amendment No. 2)*


                                 Tecogen Inc.
                               (Name of Issuer)


                                 Common Stock
                        (Title of Class of Securities)


                                  87876P201
                                (CUSIP Number)


                              Barbara Ann Bernard
                             Wincrest Capital Ltd.
                          7 Old Fort Bay Town Centre
                              Nassau, The Bahamas
                                (242) 603-2015


                            As of September 5, 2017


If the filing person has previously filed a statement 13G to report the
acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of ss.240.13D-1(e), 240.13D-1(f), or 240.13D-1(g), check
the following box [__].

Note: Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 13d-7 for
other parties to whom copies are to be sent.


_________
*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
that section of the Act but shall be subject to all other provisions of
the Act (however, see the Notes).







































CUSIP No. 87876P201                      13D


                1.  NAME OF REPORTING PERSONS
                    I.R.S. IDENITIFCATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

                    Wincrest Capital Ltd.

                2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                    (a)  [  ]

                    (b)  [  ]

                3.  SEC USE ONLY

                4.  SOURCE OF FUNDS*

                    AF

                5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                    PURSUANT TO ITEMS 2(d) OR 2(e)

                    [  ]

                6.  CITIZENSHIP OR PLACE OF ORGANIZATION

                    The Bahamas

               NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING
               PERSON WITH:

                7.  SOLE VOTING POWER:

                    0

                8.  SHARED VOTING POWER:

                    0

                9.  SOLE DISPOSITIVE POWER:

                    0




CUSIP No. 87876P201                      13D


               10.  SHARED DISPOSITIVE POWER:

                    0

               11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    0

               12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                    CERTAIN SHARES*

                    [  ]

               13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                    0%

               14.  TYPE OF REPORTING PERSON*

                    CO, IA


























CUSIP No. 87876P201                      13D


                1.  NAME OF REPORTING PERSONS
                    I.R.S. IDENITIFCATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

                    Barbara Ann Bernard

                2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                    (a)  [  ]

                    (b)  [  ]

                3.  SEC USE ONLY

                4.  SOURCE OF FUNDS*

                    AF

                5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                    PURSUANT TO ITEMS 2(d) OR 2(e)

                    [  ]

                6.  CITIZENSHIP OR PLACE OF ORGANIZATION

                    Ireland

                NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING
                PERSON WITH:

                7.  SOLE VOTING POWER:

                    0

                8.  SHARED VOTING POWER:

                    0

                9.  SOLE DISPOSITIVE POWER:

                    0





CUSIP No. 87876P201                      13D


               10.  SHARED DISPOSITIVE POWER:

                    0

               11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    0

               12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                    CERTAIN SHARES*

                    [  ]

               13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                    0%

               14.  TYPE OF REPORTING PERSON*

                    IN, HC
























CUSIP No. 87876P201                      13D


                1.  NAME OF REPORTING PERSONS
                    I.R.S. IDENITIFCATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):

                    Wincrest Contraria Master Fund Ltd.

                2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

                    (a)  [  ]

                    (b)  [  ]

                3.  SEC USE ONLY

                4.  SOURCE OF FUNDS*

                    WC

                5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                    PURSUANT TO ITEMS 2(d) OR 2(e)

                    [  ]

                6.  CITIZENSHIP OR PLACE OF ORGANIZATION

                    Cayman Islands

                NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING
                PERSON WITH:

                7.  SOLE VOTING POWER:

                    0

                8.  SHARED VOTING POWER:

                    0

                9.  SOLE DISPOSITIVE POWER:

                    0






CUSIP No. 87876P201                      13D


               10.  SHARED DISPOSITIVE POWER:

                    0

               11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    0

               12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                    CERTAIN SHARES*

                    [  ]

               13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                    0%

               14.  TYPE OF REPORTING PERSON*

                    CO
























CUSIP No. 87876P201                      13D


THIS FILING IS AMENDMENT NO. 2 TO SCHEDULE 13D FOR WINCREST CAPITAL LTD. AND
BARBARA ANN BERNARD. THIS FILING IS AMENDMENT NO. 1 TO SCHEDULE 13D FOR
WINCREST CONTRARIA MASTER FUND LTD.

ITEM 1.             SECURITY AND ISSUER.

                    This Schedule 13D relates to the Common Stock, $0.001
                    par value (the "Shares") of Tecogen Inc. (the "Issuer").
                    The address of the Issuer's office is 45 First Avenue,
                    Waltham, Massachusetts 02451.

ITEM 2.             IDENTITY AND BACKGROUND.

(a,f)               This statement is being filed by (i) Wincrest Capital
                    Ltd. ("Wincrest"), a company incorporated with limited
                    liability in the Bahamas, which acts as investment
                    manager to Wincrest Contraria Master Fund Ltd.
                    ("Wincrest Contraria"), and whose director is Barbara
                    Ann Bernard, (ii) Barbara Ann Bernard, who is the
                    controlling shareholder and Chief Investment Officer of
                    Wincrest, and (iii) Wincrest Contraria, an exempted
                    company incorporated with limited liability under the
                    laws of the Cayman Islands, whose directors are
                    Barbara Ann Bernard, Frank Crothers, Joanne Bernard,
                    and Vikram Gandhi. Each of Wincrest, Bernard, and
                    Wincrest Contraria may be referred to herein as a
                    "Reporting Person and collectively may be referred to
                    as "Reporting Persons").

(b)                 The principal business address of Wincrest and Bernard
                    is 7 Old Fort Bay Town Centre, Nassau, The Bahamas.
                    The principal business address of Wincrest Contraria
                    is c/o Elian Fiduciary Services (Cayman) Ltd.,
                    190 Elgin Avenue, P.O. Box KY1-9007, George Town,
                    Grand Cayman, Cayman Islands.

(c)                 Wincrest is an investment management firm that serves
                    as the investment adviser to certain private investment
                    funds, including Wincrest Contraria and Wincrest
                    Contraria. Bernard is a director of the controlling
                    shareholder and Chief Investment Officer of Wincrest.
                    Wincrest Contraria is an exempted company incorporated
                    with limited liability under the laws of the Cayman
                    Islands.

CUSIP No. 87876P201                      13D


(d)                 None of the Reporting Persons have, during the last five
                    years, been convicted in a criminal proceeding (excluding
                    traffic violations or similar misdemeanors).

(e)                 None of the Reporting Persons have, during the last five
                    years, been a party to a civil proceeding of a judicial or
                    administrative body of competent jurisdiction and as a
                    result of such proceeding were or are subject to a judgment,
                    decree or final order enjoining future violations of, or
                    prohibiting or mandating activities subject to, Federal
                    or state securities laws or finding any violation with
                    respect to such laws.

ITEM 3.             SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

                    As of the date hereof each of the Reporting Persons may be
                    deemed to beneficially own 0 Shares. The source of funds
                    used to purchase the Shares was the working capital of an
                    affiliate of Wincrest.

ITEM 4.             PURPOSE OF TRANSACTION.

(a-j)               The Reporting Persons had acquired their Shares of the
                    Issuer for investment. The Reporting Persons have no plans
                    or proposals as of the date of this filings which, related
                    to, or would result in, any of the actions enumerated in
                    Item 4 of the instructions to Schedule 13D.

                    The Reporting Persons reserve the right to be in contact
                    with members of the Issuer's management, the members of
                    the Issuer's Board of Directors, other significant
                    shareholders, and others regarding alternatives that the
                    Issuer could employ to increase shareholder value.

                    The Reporting Persons reserve the right to effect
                    transactions that would change the number of Shares they
                    may be deemed to beneficially own.

                    The Reporting Persons reserve the right to act in concert
                    with any other shareholders of the Issuer, or other





CUSIP No. 87876P201                      13D


                    persons, for a common purpose should it determine to do
                    so, and/or to recommend courses of action to the Issuer's
                    management, the Issuer's Board of Directors, the Issuer's
                    shareholders, and others.

ITEM 5.             INTEREST IN SECURITIES OF THE ISSUER.

(a-e)               Subsequent to having transferred its controlling interest
                    in the Issuer to a private investor, neither Wincrest,
                    Wincrest Contraria, nor Bernard have the sole power, nor
                    the shared power to dispose of, direct the disposition of,
                    vote, or direct the vote of Shares of the Issuer.

                    The Reporting Persons shall be deemed to have transferred in
                    total, all of their beneficial and controlling interests in
                    1,247,165 Shares of the Issuer through an in-kind
                    distribution to a private investor and beneficial owner of
                    Wincrest Contraria as of September 5, 2017.

                    As of the date hereof, the Reporting Persons no longer own
                    more than 5% of the total outstanding Common Shares of the
                    Issuer.

ITEM 6.             CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS, OR RELATIONSHIPS
                    WITH RESPECT TO SECURITIES OF THE ISSUER.

                    The Reporting Persons do not have a contract, arrangement,
                    understanding, or relationship with any person with respect
                    to the Shares.

ITEM 7.             MATERIAL TO BE FILED AS EXHIBITS.

                    Exhibit A: Joint Filing Statement













CUSIP No. 87876P201                      13D


SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I
     certify that the information set forth in this statement is true, complete
     and correct.


SEPTEMBER 29, 2017

                                 WINCREST CAPITAL LTD.


                                 /s/ Barbara Ann Bernard
                                 --------------------------------------------
                                 Barbara Ann Bernard, Chief Executive Officer


                                 BARBARA ANN BERNARD


                                 /s/ Barbara Ann Bernard
                                 --------------------------------------------


                                 WINCREST CONTRARIA MASTER FUND LTD.


                                 /s/ Barbara Ann Bernard
                                 --------------------------------------------
                                 Barbara Ann Bernard, Director


Intentional misstatements or omissions of fact constitute Federal criminal
violations (see 18 U.S.C 1001).














CUSIP No. 87876P201                      13D

                                       EXHIBIT A


AGREEMENT

The undersigned agree that this Schedule 13D (and any amendments thereto),
relating to the Common Stock, $0.001 par value of Tecogen Inc. shall be filed
on behalf of the undersigned.


SEPTEMBER 29, 2017

                                 WINCREST CAPITAL LTD.


                                 /s/ Barbara Ann Bernard
                                 --------------------------------------------
                                 Barbara Ann Bernard, Chief Executive Officer


                                 BARBARA ANN BERNARD


                                 /s/ Barbara Ann Bernard
                                 --------------------------------------------


                                 WINCREST CONTRARIA MASTER FUND LTD.


                                 /s/ Barbara Ann Bernard
                                 --------------------------------------------
                                 Barbara Ann Bernard, Director